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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/menu/menu.doc:4 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Using menus</title>
<style type="text/css"><!--
fn { margin-left: 1cm; text-indent: -1cm; }
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a:visited { color: #672967; text-decoration: none }
body { background: #ffffff; color: black; }
--></style>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
 <a href="index.html">
<font color="#004faf">Home</font></a>
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</td>
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Using menus</h1>

   
<p> 
This example demonstrates a menu bar with pull-down menus,
sub-menus and custom menu items. It also demonstrates a pop-up
context menu.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id: qt/menu.h   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for TQt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#ifndef MENU_H
#define MENU_H

#include &lt;<a href="qwidget-h.html">ntqwidget.h</a>&gt;
#include &lt;<a href="qmenubar-h.html">ntqmenubar.h</a>&gt;
#include &lt;<a href="qlabel-h.html">ntqlabel.h</a>&gt;


class MenuExample : public <a href="ntqwidget.html">TQWidget</a>
{
    <a href="metaobjects.html#TQ_OBJECT">TQ_OBJECT</a>
public:
    MenuExample( <a href="ntqwidget.html">TQWidget</a> *parent=0, const char *name=0 );

public slots:
    void open();
    void news();
    void save();
    void closeDoc();
    void undo();
    void redo();
    void normal();
    void bold();
    void underline();
    void about();
    void aboutTQt();
    void printer();
    void file();
    void fax();
    void printerSetup();

protected:
    void    resizeEvent( <a href="qresizeevent.html">TQResizeEvent</a> * );

signals:
    void    explain( const <a href="ntqstring.html">TQString</a>&amp; );

private:
    void contextMenuEvent ( <a href="qcontextmenuevent.html">TQContextMenuEvent</a> * );


    <a href="ntqmenubar.html">TQMenuBar</a> *menu;
    <a href="ntqlabel.html">TQLabel</a>   *label;
    bool isBold;
    bool isUnderline;
    int boldID, underlineID;
};


#endif // MENU_H
</pre>

<p> <hr>
<p> Implementation:
<p> <pre>/****************************************************************************
** $Id: qt/menu.cpp   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for TQt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "menu.h"
#include &lt;<a href="qcursor-h.html">ntqcursor.h</a>&gt;
#include &lt;<a href="qpopupmenu-h.html">ntqpopupmenu.h</a>&gt;
#include &lt;<a href="qapplication-h.html">ntqapplication.h</a>&gt;
#include &lt;<a href="qmessagebox-h.html">ntqmessagebox.h</a>&gt;
#include &lt;<a href="qpixmap-h.html">ntqpixmap.h</a>&gt;
#include &lt;<a href="qpainter-h.html">ntqpainter.h</a>&gt;

/* XPM */
static const char * p1_xpm[] = {
"16 16 3 1",
"       c None",
".      c #000000000000",
"X      c #FFFFFFFF0000",
"                ",
"                ",
"         ....   ",
"        .XXXX.  ",
" .............. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .XXXXXXXXXXXX. ",
" .............. ",
"                "};

/* XPM */
static const char * p2_xpm[] = {
"16 16 3 1",
"       c None",
".      c #000000000000",
"X      c #FFFFFFFFFFFF",
"                ",
"   ......       ",
"   .XXX.X.      ",
"   .XXX.XX.     ",
"   .XXX.XXX.    ",
"   .XXX.....    ",
"   .XXXXXXX.    ",
"   .XXXXXXX.    ",
"   .XXXXXXX.    ",
"   .XXXXXXX.    ",
"   .XXXXXXX.    ",
"   .XXXXXXX.    ",
"   .XXXXXXX.    ",
"   .........    ",
"                ",
"                "};

/* XPM */
static const char * p3_xpm[] = {
"16 16 3 1",
"       c None",
".      c #000000000000",
"X      c #FFFFFFFFFFFF",
"                ",
"                ",
"   .........    ",
"  ...........   ",
"  ........ ..   ",
"  ...........   ",
"  ...........   ",
"  ...........   ",
"  ...........   ",
"  ...XXXXX...   ",
"  ...XXXXX...   ",
"  ...XXXXX...   ",
"  ...XXXXX...   ",
"   .........    ",
"                ",
"                "};


/*
  Auxiliary class to provide fancy menu items with different
  fonts. Used for the "bold" and "underline" menu items in the options
  menu.
 */
class MyMenuItem : public <a href="qcustommenuitem.html">TQCustomMenuItem</a>
{
public:
    MyMenuItem( const <a href="ntqstring.html">TQString</a>&amp; s, const <a href="ntqfont.html">TQFont</a>&amp; f )
        : string( s ), font( f ){};
    ~MyMenuItem(){}

    void paint( <a href="ntqpainter.html">TQPainter</a>* p, const TQColorGroup&amp; /*cg*/, bool /*act*/, bool /*enabled*/, int x, int y, int w, int h )
    {
        p-&gt;<a href="ntqpainter.html#setFont">setFont</a> ( font );
        p-&gt;<a href="ntqpainter.html#drawText">drawText</a>( x, y, w, h, AlignLeft | AlignVCenter | DontClip | ShowPrefix, string );
    }

    <a href="ntqsize.html">TQSize</a> sizeHint()
    {
        return TQFontMetrics( font ).size( AlignLeft | AlignVCenter | ShowPrefix | DontClip,  string );
    }
private:
    <a href="ntqstring.html">TQString</a> string;
    <a href="ntqfont.html">TQFont</a> font;
};


<a name="f501"></a>MenuExample::MenuExample( <a href="ntqwidget.html">TQWidget</a> *parent, const char *name )
    : <a href="ntqwidget.html">TQWidget</a>( parent, name )
{
    <a href="ntqpixmap.html">TQPixmap</a> p1( p1_xpm );
    <a href="ntqpixmap.html">TQPixmap</a> p2( p2_xpm );
    <a href="ntqpixmap.html">TQPixmap</a> p3( p3_xpm );
    <a href="ntqpopupmenu.html">TQPopupMenu</a> *print = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( print );
<a name="x1879"></a>    print-&gt;<a href="ntqpopupmenu.html#insertTearOffHandle">insertTearOffHandle</a>();
<a name="x1869"></a>    print-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Print to printer", this, SLOT(printer()) );
    print-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "Print to &amp;file", this, SLOT(file()) );
    print-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "Print to fa&amp;x", this, SLOT(fax()) );
<a name="x1870"></a>    print-&gt;<a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
    print-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "Printer &amp;Setup", this, SLOT(printerSetup()) );

    <a href="ntqpopupmenu.html">TQPopupMenu</a> *file = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( file );
    file-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( p1, "&amp;Open",  this, SLOT(open()), CTRL+Key_O );
    file-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( p2, "&amp;New", this, SLOT(news()), CTRL+Key_N );
    file-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( p3, "&amp;Save", this, SLOT(save()), CTRL+Key_S );
    file-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Close", this, SLOT(closeDoc()), CTRL+Key_W );
    file-&gt;<a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Print", print, CTRL+Key_P );
    file-&gt;<a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
    file-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "E&amp;xit",  tqApp, SLOT(<a href="ntqapplication.html#quit">quit</a>()), CTRL+Key_Q );

    <a href="ntqpopupmenu.html">TQPopupMenu</a> *edit = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( edit );
    int undoID = edit-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Undo", this, SLOT(undo()) );
    int redoID = edit-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Redo", this, SLOT(redo()) );
<a name="x1873"></a>    edit-&gt;<a href="ntqmenudata.html#setItemEnabled">setItemEnabled</a>( undoID, FALSE );
    edit-&gt;<a href="ntqmenudata.html#setItemEnabled">setItemEnabled</a>( redoID, FALSE );

    <a href="ntqpopupmenu.html">TQPopupMenu</a>* options = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( options );
    options-&gt;<a href="ntqpopupmenu.html#insertTearOffHandle">insertTearOffHandle</a>();
    options-&gt;<a href="ntqwidget.html#setCaption">setCaption</a>("Options");
    options-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Normal Font", this, SLOT(normal()) );
    options-&gt;<a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();

<a name="x1883"></a>    options-&gt;<a href="ntqwidget.html#polish">polish</a>(); // adjust system settings
<a name="x1882"></a>    <a href="ntqfont.html">TQFont</a> f = options-&gt;<a href="ntqwidget.html#font">font</a>();
<a name="x1860"></a>    f.<a href="ntqfont.html#setBold">setBold</a>( TRUE );
    boldID = options-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( new MyMenuItem( "Bold", f ) );
<a name="x1871"></a>    options-&gt;<a href="ntqmenudata.html#setAccel">setAccel</a>( CTRL+Key_B, boldID );
<a name="x1868"></a>    options-&gt;<a href="ntqmenudata.html#connectItem">connectItem</a>( boldID, this, SLOT(bold()) );
    f = <a href="ntqwidget.html#font">font</a>();
<a name="x1861"></a>    f.<a href="ntqfont.html#setUnderline">setUnderline</a>( TRUE );
    underlineID = options-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( new MyMenuItem( "Underline", f ) );
    options-&gt;<a href="ntqmenudata.html#setAccel">setAccel</a>( CTRL+Key_U, underlineID );
    options-&gt;<a href="ntqmenudata.html#connectItem">connectItem</a>( underlineID, this, SLOT(underline()) );

    isBold = FALSE;
    isUnderline = FALSE;
<a name="x1880"></a>    options-&gt;<a href="ntqpopupmenu.html#setCheckable">setCheckable</a>( TRUE );


    <a href="ntqpopupmenu.html">TQPopupMenu</a> *help = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( help );
    help-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;About", this, SLOT(about()), CTRL+Key_H );
    help-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "About &amp;TQt", this, SLOT(aboutTQt()) );

    // If we used a TQMainWindow we could use its built-in menuBar().
    menu = new <a href="ntqmenubar.html">TQMenuBar</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( menu );
    menu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;File", file );
    menu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Edit", edit );
    menu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Options", options );
    menu-&gt;<a href="ntqmenudata.html#insertSeparator">insertSeparator</a>();
    menu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Help", help );
<a name="x1867"></a>    menu-&gt;<a href="ntqmenubar.html#setSeparator">setSeparator</a>( TQMenuBar::InWindowsStyle );


    <a href="ntqlabel.html">TQLabel</a> *msg = new <a href="ntqlabel.html">TQLabel</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( msg );
    msg-&gt;<a href="ntqlabel.html#setText">setText</a>( "A context menu is available.\n"
                  "Invoke it by right-clicking or by"
                  " pressing the 'context' button." );
<a name="x1886"></a>    msg-&gt;<a href="ntqwidget.html#setGeometry">setGeometry</a>( 0, height() - 60, width(), 60 );
<a name="x1864"></a>    msg-&gt;<a href="ntqlabel.html#setAlignment">setAlignment</a>( AlignCenter );

    label = new <a href="ntqlabel.html">TQLabel</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( label );
    label-&gt;<a href="ntqwidget.html#setGeometry">setGeometry</a>( 20, rect().center().y()-20, width()-40, 40 );
    label-&gt;<a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( TQFrame::Box | TQFrame::Raised );
<a name="x1863"></a>    label-&gt;<a href="ntqframe.html#setLineWidth">setLineWidth</a>( 1 );
    label-&gt;<a href="ntqlabel.html#setAlignment">setAlignment</a>( AlignCenter );

    <a href="ntqobject.html#connect">connect</a>( this,  SIGNAL(explain(const <a href="ntqstring.html">TQString</a>&amp;)),
             label, SLOT(<a href="ntqlabel.html#setText">setText</a>(const <a href="ntqstring.html">TQString</a>&amp;)) );

    <a href="ntqwidget.html#setMinimumSize">setMinimumSize</a>( 100, 80 );
    <a href="ntqwidget.html#setFocusPolicy">setFocusPolicy</a>( TQWidget::ClickFocus );
}


<a name="x1881"></a>void MenuExample::<a href="ntqwidget.html#contextMenuEvent">contextMenuEvent</a>( <a href="qcontextmenuevent.html">TQContextMenuEvent</a> * )
{
    <a href="ntqpopupmenu.html">TQPopupMenu</a>* contextMenu = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( contextMenu );
    <a href="ntqlabel.html">TQLabel</a> *caption = new <a href="ntqlabel.html">TQLabel</a>( "&lt;font color=darkblue&gt;&lt;u&gt;&lt;b&gt;"
        "Context Menu&lt;/b&gt;&lt;/u&gt;&lt;/font&gt;", this );
    caption-&gt;<a href="ntqlabel.html#setAlignment">setAlignment</a>( TQt::AlignCenter );
    contextMenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( caption );
    contextMenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;New",  this, SLOT(news()), CTRL+Key_N );
    contextMenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Open...", this, SLOT(open()), CTRL+Key_O );
    contextMenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Save", this, SLOT(save()), CTRL+Key_S );
    <a href="ntqpopupmenu.html">TQPopupMenu</a> *submenu = new <a href="ntqpopupmenu.html">TQPopupMenu</a>( this );
    <a href="ntqapplication.html#TQ_CHECK_PTR">TQ_CHECK_PTR</a>( submenu );
    submenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Print to printer", this, SLOT(printer()) );
    submenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "Print to &amp;file", this, SLOT(file()) );
    submenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "Print to fa&amp;x", this, SLOT(fax()) );
    contextMenu-&gt;<a href="ntqmenudata.html#insertItem">insertItem</a>( "&amp;Print", submenu );
<a name="x1878"></a><a name="x1859"></a>    contextMenu-&gt;<a href="ntqpopupmenu.html#exec">exec</a>( TQCursor::<a href="ntqcursor.html#pos">pos</a>() );
    delete contextMenu;
}


void <a name="f502"></a>MenuExample::open()
{
    emit explain( "File/Open selected" );
}


void <a name="f503"></a>MenuExample::news()
{
    emit explain( "File/New selected" );
}

void <a name="f504"></a>MenuExample::save()
{
    emit explain( "File/Save selected" );
}


void <a name="f505"></a>MenuExample::closeDoc()
{
    emit explain( "File/Close selected" );
}


void <a name="f506"></a>MenuExample::undo()
{
    emit explain( "Edit/Undo selected" );
}


void <a name="f507"></a>MenuExample::redo()
{
    emit explain( "Edit/Redo selected" );
}


void <a name="f508"></a>MenuExample::normal()
{
    isBold = FALSE;
    isUnderline = FALSE;
    <a href="ntqfont.html">TQFont</a> font;
<a name="x1865"></a>    label-&gt;<a href="ntqlabel.html#setFont">setFont</a>( font );
<a name="x1872"></a>    menu-&gt;<a href="ntqmenudata.html#setItemChecked">setItemChecked</a>( boldID, isBold );
    menu-&gt;<a href="ntqmenudata.html#setItemChecked">setItemChecked</a>( underlineID, isUnderline );
    emit explain( "Options/Normal selected" );
}


void <a name="f509"></a>MenuExample::bold()
{
    isBold = !isBold;
    <a href="ntqfont.html">TQFont</a> font;
    font.<a href="ntqfont.html#setBold">setBold</a>( isBold );
    font.<a href="ntqfont.html#setUnderline">setUnderline</a>( isUnderline );
    label-&gt;<a href="ntqlabel.html#setFont">setFont</a>( font );
    menu-&gt;<a href="ntqmenudata.html#setItemChecked">setItemChecked</a>( boldID, isBold );
    emit explain( "Options/Bold selected" );
}


void <a name="f510"></a>MenuExample::underline()
{
    isUnderline = !isUnderline;
    <a href="ntqfont.html">TQFont</a> font;
    font.<a href="ntqfont.html#setBold">setBold</a>( isBold );
    font.<a href="ntqfont.html#setUnderline">setUnderline</a>( isUnderline );
    label-&gt;<a href="ntqlabel.html#setFont">setFont</a>( font );
    menu-&gt;<a href="ntqmenudata.html#setItemChecked">setItemChecked</a>( underlineID, isUnderline );
    emit explain( "Options/Underline selected" );
}


void <a name="f511"></a>MenuExample::about()
{
<a name="x1874"></a>    TQMessageBox::<a href="ntqmessagebox.html#about">about</a>( this, "TQt Menu Example",
                        "This example demonstrates simple use of TQt menus.\n"
                        "You can cut and paste lines from it to your own\n"
                        "programs." );
}


void <a name="f512"></a>MenuExample::aboutTQt()
{
<a name="x1875"></a>    TQMessageBox::<a href="ntqmessagebox.html#aboutTQt">aboutTQt</a>( this, "TQt Menu Example" );
}


void <a name="f513"></a>MenuExample::printer()
{
    emit explain( "File/Printer/Print selected" );
}

void <a name="f514"></a>MenuExample::file()
{
    emit explain( "File/Printer/Print To File selected" );
}

void <a name="f515"></a>MenuExample::fax()
{
    emit explain( "File/Printer/Print To Fax selected" );
}

void <a name="f516"></a>MenuExample::printerSetup()
{
    emit explain( "File/Printer/Printer Setup selected" );
}


<a name="x1884"></a>void MenuExample::<a href="ntqwidget.html#resizeEvent">resizeEvent</a>( <a href="qresizeevent.html">TQResizeEvent</a> * )
{
    label-&gt;<a href="ntqwidget.html#setGeometry">setGeometry</a>( 20, rect().center().y()-20, width()-40, 40 );
}


int main( int argc, char ** argv )
{
    <a href="ntqapplication.html">TQApplication</a> a( argc, argv );
    MenuExample m;
    m.<a href="ntqwidget.html#setCaption">setCaption</a>("TQt Examples - Menus");
    a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( &amp;m );
    m.<a href="ntqwidget.html#show">show</a>();
    return a.<a href="ntqapplication.html#exec">exec</a>();
}
</pre>

<p>See also <a href="examples.html">Examples</a>.

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